package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.xiaoymin.knife4j.core.util.CollectionUtils;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.Websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service
@Slf4j
public class OrderServiceImol implements OrderService {

    @Autowired
    private OrderMapper orderMapper;// 订单服务接口
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;// 地址簿服务接口
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;// 购物车服务接口

    @Autowired
    private WebSocketServer webSocketServer;
    /*
    * 订单支付功能
    * */
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;

    /*
    * 用户下单*/
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //异常情况处理（收货为空、超出配送范围、购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        //获取当前用户的购物车数据
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0){
            throw new
                    ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //构造订单数据
        Orders order =new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,order);
        order.setPhone(addressBook.getPhone());
        order.setAddress(addressBook.getDetail());
        order.setConsignee(addressBook.getConsignee());
        order.setNumber(String.valueOf(System.currentTimeMillis()));
        order.setUserId(userId);
        order.setStatus(Orders.PENDING_PAYMENT);
        order.setPayStatus(Orders.UN_PAID);
        order.setOrderTime(LocalDateTime.now());
        //向订单表插入1条数据
        orderMapper.insert(order);
        //订单明细数据
        List<OrderDetail> orderDetailList =new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(order.getId());
            orderDetailList.add(orderDetail);
        }
        //向明细表插入n条数据
        orderDetailMapper.insertBatch(orderDetailList);
        //清理购物车数据
        shoppingCartMapper.deleteByUserId(userId);
        //封装返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(order.getId())
                .orderNumber(order.getNumber())
                .orderAmount(order.getAmount())
                .orderTime(order.getOrderTime())
                .build();
        return orderSubmitVO;
    }
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }

        JSONObject jsonObject = new JSONObject();
        jsonObject.put("code", "ORDERPAID");

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        // 根据订单号查询当前用户的该订单
        Orders ordersDB = orderMapper.getByNumberAndUserId(ordersPaymentDTO.getOrderNumber(), userId);

        paySuccess(ordersDB.getNumber());

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {
        log.info("支付成功，订单号：{}", outTradeNo);
        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        //通过websocket向客户端浏览器推送消息type orderId content
        Map map = new HashMap();
        map.put("type",1);//1.来电提醒 2.客户催单
        map.put("orderId", orders.getId());
        map.put("content", "订单号："+outTradeNo);
        //通过WebSocket实现来单提醒，向客户端浏览器推送消息
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);

    }
    @Override
    public PageResult pageResult(int pageNum, int pageSize, Integer status) {
        PageHelper.startPage(pageNum,pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);
        //条件查询
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> List = new ArrayList<>();
        if (page != null&& page.getTotal()>0){
            for (Orders orders : page){
                Long id = orders.getId();
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                orderVO.setOrderDetailList(orderDetailList);
                List.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(),List);
    }
    /*
    * 查询订单详情
    * */
    @Override
    public OrderVO orderDetail(Long id) {
        //根id查询订单
        Orders orders = orderMapper.getById(id);
        //查询订单明细
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }
    /*
    * 取消订单
    * */
    @Override
    public void cancel(Long id) throws Exception {
        //根据id查询订单
        Orders ordersDB = orderMapper.getById(id);
        if (ordersDB == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //判断订单状态
        if (ordersDB.getStatus() > Orders.TO_BE_CONFIRMED){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        //订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getPayStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信退款接口
            /*weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));*/
            //支付状态修改为退款
            orders.setPayStatus(Orders.REFUND);

        }
        //跟新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }
    /*
    *再来一单
    **/
    @Override
    public void repetition(Long id) {
        //获取当前用户id
        Long userId = BaseContext.getCurrentId();
        //根据id查询当前订单明细
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        //将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
        ShoppingCart shoppingCart = new ShoppingCart() ;
        //将原订单详情对象中的数据，复制到购物车对象中
            BeanUtils.copyProperties(x, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());

            return shoppingCart;
        }).collect(Collectors.toList());
        shoppingCartMapper.insertBatch(shoppingCartList);

    }
    /*
    *订单搜索
    * */
    @Override
    public PageResult pageQuery(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        //部分订单状态，需要额外返回订单菜品信息，将orders转换为OrderVO
        List<OrderVO> List = getOrderVOList(page);
        return new PageResult(page.getTotal(),List);
    }
    private List<OrderVO> getOrderVOList(Page<Orders> page){

        List<OrderVO> orderVOList = new ArrayList<>();

        List<Orders> ordersList = page.getResult();

        if (!CollectionUtils.isEmpty(ordersList)){
            //不为空，则进行数据处理
            for (Orders orders : ordersList){
                //将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                String orderDishes = getOrderDishesStr(orders);
                //将订单菜品信息封装到orderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }
    /*
    * 根据订单id获取菜品信息字符串
    * */
    private String getOrderDishesStr (Orders orders){
        //查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
        //将每一条订单菜品信息拼接成字符串
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());
        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }

    /*
    * 各个状态的订单数量统计
    * */
    @Override
    public OrderStatisticsVO statistics() {
        //根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toBeConfirmed = orderMapper.countByStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countByStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countByStatus(Orders.DELIVERY_IN_PROGRESS);
        //将查询出的数据封装到OrderStatisticsVO中响应
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }
    /*
    * 接单
    * */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders=Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        //根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());
        //订单只有存在状态且为2的时候才可以拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //判断支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus==Orders.PAID) {
            //调用微信退款接口
            /*weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));*/
            //支付状态修改为
            log.info("申请退款：{}");
        }
        //拒单需要退款，根据据订单id更新订单状态、拒单原因、取消时间
        Orders orders = Orders.builder()
                .id(ordersRejectionDTO.getId())
                .status(Orders.CANCELLED)
                .rejectionReason(ordersRejectionDTO.getRejectionReason())
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);

    }
    /*
    * 取消订单
    * */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        //判断支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus==Orders.PAID) {
            //调用微信退款接口
            /*weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));*/
            //支付状态修改为
            log.info("申请退款：{}");
        }
        //拒单需要退款，根据据订单id更新订单状态、拒单原因、取消时间
        Orders orders = Orders.builder()
                .id(ordersCancelDTO.getId())
                .status(Orders.CANCELLED)
                .rejectionReason(ordersCancelDTO.getCancelReason())
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);

    }
    /*
    * 派送订单
    * */
    @Override
    public void delivery(Long id) {
        Orders ordersDB = orderMapper.getById(id);
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.DELIVERY_IN_PROGRESS)
                .build();
        orderMapper.update(orders);

    }
    /*
    * 完成订单
    * */
    @Override
    public void complete(Long id) {
        Orders ordersDB = orderMapper.getById(id);
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.COMPLETED)
                .deliveryTime(LocalDateTime.now() )
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void reminder(Long id) {
        Orders orders = orderMapper.getById(id);
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        Map map = new HashMap();
        map.put("type",2);//1.来电提醒 2.客户催单
        map.put("orderId", orders.getId());
        map.put("content", "订单号："+orders.getNumber());
        //通过WebSocket实现来单提醒，向客户端浏览器推送消息
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

}
